Medium is a word with multiple meanings in English:
1. As an adjective: of middle size, degree, or quality (e.g. "a medium-sized shirt")
2. As a noun: a means or channel of communication (e.g. "the internet is a powerful medium")
3. In art: the material used to create a work (e.g. "oil paint is her favorite medium")
4. In spirituality: a person who claims to communicate with the dead
5. The Medium platform: a popular online publishing platform